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university students study hard and listen to teachers for their lessons with special lectures in the columns of math class
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teacher
professor
instructor
class
classroom
standing
man
adult
profession
education
cheerful
work
happy
people
whiteboard
looking
smiling
formula
student
mathematics
studying
school
ceducation
learn
study
math
background
lesson
knowledge
calculate
teaching
university
pen
lecture
attention
learning
high
college
sitting
semester
table
paper
uniform
explain
listen
faculty
coaching
academy
asian
students
hard
teachers
lessons
special
lectures
columns
class